How do you give friends admin rights without a password to the server?
Solution 1:
After some research I found that you should be able to add admins by altering the users.txt file.
You can find this file in:STEAMFOLDER > GarrysMod > garrysmod > settings > users.txt
In this file an entry looks like this:
"admin"
{
//"garry" "STEAM_0:1:7099"
}
What you should do is enter a line with the info of your friend so it ends up like this:
"admin"
{
"Friends_Username" "STEAM_0:0:0000"
}
You can find a steam id trough various websites or steam itself.
source that helped me get the idea